James R Walter

US Patent:

51243490, Jun 23, 1992

Filed:

Oct 31, 1990

Appl. No.:

7/606366

Inventors:

Charles G. Carter - Silver Spring MD
Clifford J. Hull - Laurel MD
Narender P. Luthra - Columbia MD
James F. Walter - Ashton MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

A01N 4316

US Classification:

514453

Abstract:

Storage stable pesticide compositions comprising neem seed extracts which contain azadirachtin as the active pesticidal ingredient wherein the compositions are characterized by their non-degrading solvent systems. In a first embodiment, the pesticide compositions contain solvent systems characterized as having greater than 50% by volume aprotic solvents and less than 15% by volume water. In a second embodiment, the pesticide compositions contain solvent systems characterized as having greater than 50% by volume alcohol and less than 5% by volume water. The pesticide compositions contain surfactant concentrations of at least about 1. 0%, up to 10%.

US Patent:

50681052, Nov 26, 1991

Filed:

Mar 13, 1989

Appl. No.:

7/322445

Inventors:

Jack A. Lewis - Columbia MD
Douglas Lumsden - Bowie MD
George Papavizas - Beltsville MD
Martha D. Hollenbeck - Hyattsville MD
James F. Walter - Ashton MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY
The United States of America as represented by the Secretary of
Agriculture - Washington DC

International Classification:

A61K 3570
C12N 114
A01N 6304

US Classification:

424 93

Abstract:

A fungal biocontrol preparation for control or prevention of plant fungal diseases comprises sporulated fungal biomass, a carrier and acid. The carrier preferably is vermiculite. The biocontrol preparation is resistant to bacterial proliferation in storage and handling and is effective in controlling damping-off diseases caused by soilborne fungal pathogens.

US Patent:

52982513, Mar 29, 1994

Filed:

Jul 21, 1993

Appl. No.:

8/094287

Inventors:

James C. Locke - Silver Spring MD
James F. Walter - Ashton MD
Hiram G. Larew - Hyattsville MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

A01N 2500

US Classification:

424405

Abstract:

Novel fungicide compositions prepared from neem seeds are disclosed. Two distinct neem derived fungicides obtained non-polar, hydrophobic solvent neem seed extracts which are substantially free of azadirachtin, by removing the hydrophobic solvent and cooling the resulting neem oil to separate a semi-solid neem wax fraction and a clarified neem oil fraction.

US Patent:

48595918, Aug 22, 1989

Filed:

Aug 7, 1987

Appl. No.:

7/083603

Inventors:

James F. Walter - Ashton MD
Martin B. Sherwin - Potomac MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C12P 1304
C12P 1322
C12N 910

US Classification:

435106

Abstract:

A process is disclosed for catalyzing the transamination of an amino acid precursor to the corresponding L-amino acid by using aspartic acid as the amino donor and by adding certain multivalent metal ions, in the form of solid metal particles or pieces, to the system to catalyze the decomposition of oxalacetic acid, a by-product of the transamination.

US Patent:

54097088, Apr 25, 1995

Filed:

Jan 31, 1994

Appl. No.:

8/190696

Inventors:

John C. Locke - Silver Spring MD
James F. Walter - Ashton MD
Hiram G. Larew - Hyattsville MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

A01N 2508

US Classification:

424410

Abstract:

Novel fungicide compositions prepared from neem seeds are disclosed. Two distinct neem derived fungicides obtained non-polar, hydrophobic solvent neem seed extracts which are substantially free of azadirachtin, by removing the hydrophobic solvent and cooling the resulting neem oil to separate a semi-solid neem wax fraction and a clarified neem oil fraction.

US Patent:

53566289, Oct 18, 1994

Filed:

Dec 2, 1993

Appl. No.:

8/161524

Inventors:

James C. Locke - Silver Spring MD
James F. Walter - Ashton MD
Hiram G. Larew - Hyattsville MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY
The United States of America as represented by the Secretary of
Agriculture - Washington DC

International Classification:

A01N 2500

US Classification:

424405

Abstract:

A novel fungicide derived from a neem seed extract comprising neem oil which is substantially free of azadirachtin, said neem oil being prepared by extracting dried, coarsely ground neem seeds with a non-polar, hydrophobic solvent to obtain a neem oil extract, and then removing the solvent to obtain the neem oil. These neem oil fungicides exhibit the ability to control various fungi.

US Patent:

56796625, Oct 21, 1997

Filed:

Jun 6, 1995

Appl. No.:

8/468897

Inventors:

Pauley Fei-Zan Chang - Ellicott City MD
James F. Walter - Ashton MD
Jerrold R. Harris - Columbia MD

Assignee:

Thermo Trilogy Corporation - Waltham MA

International Classification:

A01N 4316
A01N 6500

US Classification:

514 66

Abstract:

In an insecticidal formulation containing Pyrethrum, addition of appropriate amounts of azadirachtin and clarified neem oil can significantly synergize the Pyrethrum activity while reducing or eliminating the need for Pipronyl butoxide as an agent to augment Pyrethrum activity. The disclosed formulations represent a significant cost advantage when compared to existing Pyrethrum/Pipronyl butoxide formulations.

US Patent:

54117364, May 2, 1995

Filed:

Jul 9, 1993

Appl. No.:

8/089084

Inventors:

James C. Locke - Silver Spring MD
James F. Walter - Ashton MD
Hiram G. Larew - Hyattsville MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

A01N 2508

US Classification:

424410

Abstract:

A novel insecticide derived from a neem seed extract comprising neem oil which is substantially free of azadirachtin, said neem oil being prepared by extracting dried, coarsely ground neem seeds with a non-polar, hydrophobic solvent to obtain a neem oil extract, and then removing the solvent to obtain the neem oil. These neem oil insecticides exhibit the ability to repel insects from plant surfaces and kill insect pests at various life stages.